The maximum active power under the rated operation conditions.

The specified electrical potential difference at which the device is designed to operate, measured in volts.

The specified frequency of the alternating current at which the device is designed to operate, measured in hertz (e.g. 50/60).

The maximum direct current voltage the unit is designed to operate at safely, measured in V.

The maximum amount of electric current the device is designed to carry continuously under specified conditions, measured in amperes.

The maximum power that can be put into or produced by the device.

The maximum volume of fuel that can be held, typically measured in litres.

The type of fuel used with the product e.g. natural gas.

The total volume of all cylinders, typically measured in cubic centimetres (cm³).

The maximum power output produced by the engine, typically measured in kilowatts (kW) or horsepower (hp).

The method used to ignite the device, such as a manual match or an integrated electronic system (e.g., Piezo or Snap-Jet).

The total number of connection points available for plugging in external devices or cables.

Indicates whether the unit is equipped with a system to monitor and display the remaining amount of fuel.

The amplitude level of the undesired background noise, usually measured in decibels (db).

The method used to cool the device or to cool the air around the device.

The total number of piston movements required to complete one full power cycle (e.g. 2 or 4).

The total count of cylinders used in the mechanism to compress air or generate power.

The IP code classifies and rates the degree of protection provided against the intrusion (including body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. It is published by the International Electrotechnical Commission (IEC). The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. Where there is no protection rating with regard to one of the criteria, the digit is replaced with the letter X. an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. Another example is the Sony Xperia Z Ultra, one of the first cellular phones to be IP-rated; it is rated at IP58 and marketed as "dust resistant" and can be "immersed in 1.5 meter of freshwater for up to 30 minutes".